Oil-well elevator



Sept. Iii ]19 Filed Sept; 1', 1925 till Patented Sept. 25,

JOSJEJYH 1E. MGUDY, O15 TULSA, OKLAHOMA.

OIL-WELL ELEVATOR.

Application filed September 1, 1925. Serial No. 53,856.

The invention forming the subject matter of this application relate; to elevators espe cially adapted for use in connection with oil well operations.

Briefly stated, an in'iportant object of this invention is to provide an elevator wherein a pair of quickly detachable plates or members are carried by the body of the elevator to take the wear which the body of the elevator ordinarily suffers and to also function as retaining devices to hold the pivot pins of the jaws or rod engaging members in place whereby the use of separate fastening or retaining devices for the pivot pins is unnecessary.

A further object of the invention is to provide an elevator of the cl'iaracter specified which may be conveniently engaged or disengaged from. the rods without danger to the attendant and without the exercise of unusual skill.

A further object is to provide an elevator of the character specified which is of highly simplified constructiom durable in use, and cheap to manufacture. 6

Other objects and advantages will be ap parent during the course of the following description.

In the accompanying drawing forming a part of this application and in which like nu merals are employed to designate like parts throughout the same,

Figure 1 is an edge elevation of the improved elevator Figure 2 is a plan view of the same parts being broken away;

Figure 3 is a sectional View taken on. line 33 of Figure 2;

Figure 1 is a group perspective illustrating a pair of pivot elements and a pair of wear resisting members which in addition to functioning as such constitute a means to limit endwise movement of the pivot elements.

In the drawing, wherein for the purpose of illustration is shown a preferred embodiment of the invention, the numeral 5 designates a body or shell having the usual trunnions 8 to which a hail of a conventional type is connected for supporting the elevator. The drawings clearly illustrate that the body is provided with a socket or opening to freely receive the dogs 8, the forward portions of which have openings for the reception of the pivot pins 9 whereby the dogs are pivotally sup iiorted for movement into and out of engagement with sucker rod or the like. Fig. 2 clearly illustrates that the outer sides of he dogs 55 are provided with cylindrical sockets 10 to receive the inner portions of coil springs 11, the outer port-ions of the coil springs being received in sockets in the side. walls of the opening in the body or engaged with the side walls of the body whereby the dogs 8 are urged to the positions illustrated in Fig. 1.

In carrying out the invention the dogs 8 are provided with shanks 12 curved to cross each other and extended to a point exterior-1y of the casing or body 5 as Sl'lOWll in liig. Or if desired the teri'ninal portimu-x of the shanks maybe positioned entirely within and protected by the ears 1-1 of the body so that the dog's cannot be actuated accidentally. lln any case the cars 14- cxtend over and protect sub stantial portions of the shanks so that-the possibility of accident-ally actuating the dogs is greatly reduced.

hi 1 and 2 illustrate that the side walls of the slots in the body are provided with U- shaped grooves or channels 16 to snugly receive the outer portions of ll-shaped wear taking and pin confining members 18. The llshaped members 18 which may be of a su itablc metal are snugly positioned in the grooves 16 and take the wear which the body of the de vice ordinarily suffers. The ll-sha 'ied members 18 may be held in place by set screws 20 or other fastening devices and by the removal of the fastening devices the ti -shaped. members may be quickly replaced. Of course. the inner edge portions of the llshaped members extend a sul'hcient distance into the main slot in the body to take the wear and to space the rod from contact with the wall of the main slot in the body.

Fig. 3 also illustrates that the U-sha 'ied members 18have their terminal portions in engagement with the pivot pins 9 so that the pivot pins are positively held against accidental. loss and even against a limited endwise movement. llhis overcomes the need of employing separate fastening devices as is now necessary.

lit is thus seen that the [Ll-shaped members 18 not only function as wear resisting" devices. but also as retaining devices by means of which the pins 9 are securely held in place.

An elevator constructed in accordance with this invention is extremely simple to operate and due to the fact. that the shanks 12 are well protected the accidental operation of the device is unlikely. The body or shell 5 may be ill") suitably reinforced or strengthened by eXter-' I to said body, said pivot elements having their ends confined between said wear resisting members whereby the pivot elements are securely held in place.

2. An elevatorcomprising a body having a rod receivin slot, the alls of said slot being provided with grooves, wear resisting members detachably received in said grooves and extending into said slot to space the rod from contact with the walls of the slot, dogs adapted to extend into said slot for engaging a rod, and pivot elements connecting the dogs to said body, said pivot elements having their ends confined between said wear resisting members whereby the pivot elements are secnrely held in place, said dogs being provided with crossed shanks having their rear terminal portions terminating adjacent the outer side of the body. 7 v

3. An elevator comprising a body having a rod receiving slot,-the walls of said slot being provided with grooves, wear resisting members detachably received in said grooves and extending into said slot to space the rod from contact with the walls of the slot, dogs adapted to extend into said slot for engaging a rod, pivot elements connecting the dogs to said body, said pivot elements having their ends confined between said wear resisting members whereby the pivot elements are securely held in place, said dogs being provided with crossedshanks having their rear terminal portions terminating adjacent the outer side of the body, and spring means constantly urging the dogs to operative positions.

l. An elevator comprising abody having a rod receiving slot, the side walls of said slot being provided with grooves, U-shaped wear resistingmembers received in said grooves and extending into said slot to space the rod received in the slot i'rom engagement with the side walls of the slot, pivot pins having their ends confined between said U-shapcd wear resisting members, and dogs connected to sai d pivot elements.

5. An elevator comprising a body, having a rod receiving slot, the side walls of said slot being provided with grooves, U-shapcd wear resisting members received in said grooves and extending into said slot to space the rod received in the slot from engagement with the side walls of the slot, pivot pins having their ends confined between said U-shaped wear resisting members, dogs connected to said pivot pins, and springs urging said dogs to operative positions.

6. An elevator con'iprising a body having a rod receiving slot, the side walls of said slot being provided with grooves, U-shapcd wear resisting members received in said grooves and extending into said slot to space the rod received in the slot from engagement with the side walls of the slot, pivot pins having their ends confined between said U-shaped wear resisting members, dogs connected to said pivot pins, and springs urging said dogs to operative positions, said dogs being provided with curved shanks, said body being provided with ears overhanging said shanks and protecting the same.

7. An elevator comprising a body, rod contact means carried by said body and spacing the rod from contact with the body, dogs having pivot elements connected to the body, said rod contact means being engaged with said pivot elements to limit endwisc movement of the same.

8. An elevator comprising a body having rod receiving means, wear resisting members detachably connected to said body and normally spacing the rod from engagement with the body, and dogs having pivot elements limited in axial movement by said wear resisting members.

In testimony whereof I afiix my signature.

JOSEPH F. MOODY. 

